291 lines
7.7 KiB
Plaintext
291 lines
7.7 KiB
Plaintext
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policy_module(mta, 2.2.1)
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########################################
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#
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# Declarations
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#
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attribute mailcontent_type;
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attribute mta_exec_type;
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attribute mta_user_agent;
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attribute mailserver_delivery;
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attribute mailserver_domain;
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attribute mailserver_sender;
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attribute user_mail_domain;
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type etc_aliases_t;
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files_type(etc_aliases_t)
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type etc_mail_t;
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files_config_file(etc_mail_t)
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type mail_forward_t;
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files_type(mail_forward_t)
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type mqueue_spool_t;
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files_mountpoint(mqueue_spool_t)
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type mail_spool_t;
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files_mountpoint(mail_spool_t)
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type sendmail_exec_t;
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mta_agent_executable(sendmail_exec_t)
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mta_base_mail_template(system)
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role system_r types system_mail_t;
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mta_base_mail_template(user)
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typealias user_mail_t alias { staff_mail_t sysadm_mail_t };
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typealias user_mail_t alias { auditadm_mail_t secadm_mail_t };
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typealias user_mail_tmp_t alias { staff_mail_tmp_t sysadm_mail_tmp_t };
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typealias user_mail_tmp_t alias { auditadm_mail_tmp_t secadm_mail_tmp_t };
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ubac_constrained(user_mail_t)
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ubac_constrained(user_mail_tmp_t)
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########################################
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#
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# System mail local policy
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#
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# newalias required this, not sure if it is needed in 'if' file
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allow system_mail_t self:capability { dac_override fowner };
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allow system_mail_t self:fifo_file rw_fifo_file_perms;
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read_files_pattern(system_mail_t, etc_mail_t, etc_mail_t)
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read_files_pattern(system_mail_t, mailcontent_type, mailcontent_type)
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allow system_mail_t mail_forward_t:file read_file_perms;
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allow system_mail_t mta_exec_type:file entrypoint;
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can_exec(system_mail_t, mta_exec_type)
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kernel_read_system_state(system_mail_t)
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kernel_read_network_state(system_mail_t)
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kernel_request_load_module(system_mail_t)
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dev_read_sysfs(system_mail_t)
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dev_read_rand(system_mail_t)
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dev_read_urand(system_mail_t)
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fs_rw_anon_inodefs_files(system_mail_t)
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selinux_getattr_fs(system_mail_t)
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init_use_script_ptys(system_mail_t)
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userdom_use_user_terminals(system_mail_t)
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userdom_dontaudit_search_user_home_dirs(system_mail_t)
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optional_policy(`
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apache_read_squirrelmail_data(system_mail_t)
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apache_append_squirrelmail_data(system_mail_t)
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# apache should set close-on-exec
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apache_dontaudit_append_log(system_mail_t)
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apache_dontaudit_rw_stream_sockets(system_mail_t)
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apache_dontaudit_rw_tcp_sockets(system_mail_t)
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apache_dontaudit_rw_sys_script_stream_sockets(system_mail_t)
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')
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optional_policy(`
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arpwatch_manage_tmp_files(system_mail_t)
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ifdef(`hide_broken_symptoms', `
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arpwatch_dontaudit_rw_packet_sockets(system_mail_t)
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')
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')
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optional_policy(`
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clamav_stream_connect(system_mail_t)
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clamav_append_log(system_mail_t)
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')
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optional_policy(`
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cron_read_system_job_tmp_files(system_mail_t)
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cron_dontaudit_write_pipes(system_mail_t)
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')
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optional_policy(`
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courier_manage_spool_dirs(system_mail_t)
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courier_manage_spool_files(system_mail_t)
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courier_rw_spool_pipes(system_mail_t)
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')
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optional_policy(`
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cvs_read_data(system_mail_t)
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')
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optional_policy(`
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exim_domtrans(system_mail_t)
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exim_manage_log(system_mail_t)
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')
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optional_policy(`
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fail2ban_append_log(system_mail_t)
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')
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optional_policy(`
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logrotate_read_tmp_files(system_mail_t)
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')
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optional_policy(`
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logwatch_read_tmp_files(system_mail_t)
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')
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optional_policy(`
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# newaliases runs as system_mail_t when the sendmail initscript does a restart
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milter_getattr_all_sockets(system_mail_t)
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')
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optional_policy(`
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nagios_read_tmp_files(system_mail_t)
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')
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optional_policy(`
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manage_dirs_pattern(system_mail_t, etc_aliases_t, etc_aliases_t)
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manage_files_pattern(system_mail_t, etc_aliases_t, etc_aliases_t)
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manage_lnk_files_pattern(system_mail_t, etc_aliases_t, etc_aliases_t)
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manage_fifo_files_pattern(system_mail_t, etc_aliases_t, etc_aliases_t)
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manage_sock_files_pattern(system_mail_t, etc_aliases_t, etc_aliases_t)
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files_etc_filetrans(system_mail_t, etc_aliases_t, { file lnk_file sock_file fifo_file })
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domain_use_interactive_fds(system_mail_t)
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# postfix needs this for newaliases
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files_getattr_tmp_dirs(system_mail_t)
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postfix_exec_master(system_mail_t)
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postfix_read_config(system_mail_t)
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postfix_search_spool(system_mail_t)
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ifdef(`distro_redhat',`
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# compatability for old default main.cf
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postfix_config_filetrans(system_mail_t, etc_aliases_t, { dir file lnk_file sock_file fifo_file })
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')
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')
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optional_policy(`
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qmail_domtrans_inject(system_mail_t)
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')
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optional_policy(`
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sxid_read_log(system_mail_t)
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')
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optional_policy(`
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userdom_dontaudit_use_user_ptys(system_mail_t)
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optional_policy(`
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cron_dontaudit_append_system_job_tmp_files(system_mail_t)
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')
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')
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optional_policy(`
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smartmon_read_tmp_files(system_mail_t)
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')
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# should break this up among sections:
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optional_policy(`
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# why is mail delivered to a directory of type arpwatch_data_t?
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arpwatch_search_data(mailserver_delivery)
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arpwatch_manage_tmp_files(mta_user_agent)
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ifdef(`hide_broken_symptoms', `
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arpwatch_dontaudit_rw_packet_sockets(mta_user_agent)
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')
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optional_policy(`
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cron_read_system_job_tmp_files(mta_user_agent)
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')
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')
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########################################
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#
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# Mailserver delivery local policy
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#
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allow mailserver_delivery mail_spool_t:dir list_dir_perms;
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create_files_pattern(mailserver_delivery, mail_spool_t, mail_spool_t)
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read_files_pattern(mailserver_delivery, mail_spool_t, mail_spool_t)
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append_files_pattern(mailserver_delivery, mail_spool_t, mail_spool_t)
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create_lnk_files_pattern(mailserver_delivery, mail_spool_t, mail_spool_t)
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read_lnk_files_pattern(mailserver_delivery, mail_spool_t, mail_spool_t)
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read_files_pattern(mailserver_delivery, mail_forward_t, mail_forward_t)
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read_files_pattern(mailserver_delivery, system_mail_tmp_t, system_mail_tmp_t)
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tunable_policy(`use_samba_home_dirs',`
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fs_manage_cifs_dirs(mailserver_delivery)
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fs_manage_cifs_files(mailserver_delivery)
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fs_manage_cifs_symlinks(mailserver_delivery)
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')
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tunable_policy(`use_nfs_home_dirs',`
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fs_manage_nfs_dirs(mailserver_delivery)
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fs_manage_nfs_files(mailserver_delivery)
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fs_manage_nfs_symlinks(mailserver_delivery)
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')
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optional_policy(`
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dovecot_manage_spool(mailserver_delivery)
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dovecot_domtrans_deliver(mailserver_delivery)
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')
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optional_policy(`
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# so MTA can access /var/lib/mailman/mail/wrapper
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files_search_var_lib(mailserver_delivery)
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mailman_domtrans(mailserver_delivery)
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mailman_read_data_symlinks(mailserver_delivery)
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')
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########################################
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#
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# User send mail local policy
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#
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domain_use_interactive_fds(user_mail_t)
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userdom_use_user_terminals(user_mail_t)
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# Write to the user domain tty. cjp: why?
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userdom_use_user_terminals(mta_user_agent)
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# Create dead.letter in user home directories.
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userdom_manage_user_home_content_files(user_mail_t)
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userdom_user_home_dir_filetrans_user_home_content(user_mail_t, file)
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# for reading .forward - maybe we need a new type for it?
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# also for delivering mail to maildir
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userdom_manage_user_home_content_dirs(mailserver_delivery)
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userdom_manage_user_home_content_files(mailserver_delivery)
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userdom_manage_user_home_content_symlinks(mailserver_delivery)
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userdom_manage_user_home_content_pipes(mailserver_delivery)
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userdom_manage_user_home_content_sockets(mailserver_delivery)
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userdom_user_home_dir_filetrans_user_home_content(mailserver_delivery, { dir file lnk_file fifo_file sock_file })
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# Read user temporary files.
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userdom_read_user_tmp_files(user_mail_t)
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userdom_dontaudit_append_user_tmp_files(user_mail_t)
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# cjp: this should probably be read all user tmp
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# files in an appropriate place for mta_user_agent
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userdom_read_user_tmp_files(mta_user_agent)
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tunable_policy(`use_samba_home_dirs',`
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fs_manage_cifs_files(user_mail_t)
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fs_manage_cifs_symlinks(user_mail_t)
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')
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optional_policy(`
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allow user_mail_t self:capability dac_override;
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# Read user temporary files.
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# postfix seems to need write access if the file handle is opened read/write
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userdom_rw_user_tmp_files(user_mail_t)
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postfix_read_config(user_mail_t)
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postfix_list_spool(user_mail_t)
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')
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